Single Nucleotide Profiles of NUE Located in the 3′ UTR.
(A) to (I) Nucleotide profiles (see [A] to [G]), AAUAAA signal usage (H), and one-nucleotide variants of AAUAAA signal usage (I) of different mutant unique PACs, the wild-type (WT) unique PACs, and common PACs. oxt6 unique, sites seen only in the oxt6 mutant relative to WT; WT unique, sites seen only in WT relative to oxt6; common, poly(A) sites seen in both the WT and oxt6. All other mutants are shown in the same way. n represents transcript number. The y axis indicates the nucleotide composition at x axis locations. (H) and (I) WT-oxt6 indicates the control for oxt6 mutant. Others are labeled the same way.